{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machanical property", "concept or principle", "manufacturing process", "process parameter", "enabling technology", "material"], "input": "The SLM Ti6Al4V part exhibited fully acicular martensitic microstructure in contrast with α + β microstructure in the Ti6Al4V feedstock , while the grain structure of the CS Al part had no significant change as compared with the Al feedstock ."}
{"machanical property": [], "concept or principle": ["microstructure", "grain structure"], "manufacturing process": ["SLM"], "process parameter": [], "enabling technology": [], "material": ["Al", "as", "Ti6Al4V feedstock"]}